| 摘要 |
PROBLEM TO BE SOLVED: To reduce processing related to a microprocessor after DMA transfer when data is DMA-transferred. SOLUTION: By inputting a DMA transfer continuous signal from a DMA section 10 to a wait signal generating circuit section 30 during DMA transfer of the data to an internal memory 20, an active wait signal is input into a microprocessor 40 from the wait signal generating circuit section 30, and the processing of the microprocessor 40 is waited. By preventing the DMA transfer continuous signal from being input from the DMA section 10 to the wait signal generating circuit section 30 after the completion of the DMA transfer, an inactive wait signal is input into the microprocessor 40 from the wait signal generating circuit section 30, and the processing is restarted by releasing the waite of the microprocessor 40. COPYRIGHT: (C)2008,JPO&INPIT
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